Home / 290,084.14-400,333.76-193,120.66

Finding the Fourth Proportional to 290,084.14, 400,333.76 and 193,120.66

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Solution

The fourth proportional to 290,084.14, 400,333.76 and 193,120.66 is: 266,518.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,084.14 : 400,333.76 = 193,120.66 : x
  2. Step 2: Convert to fraction form
    290,084.14/400,333.76 = 193,120.66/x
  3. Step 3: Cross multiply
    290,084.14x = 400,333.76 × 193,120.66
  4. Step 4: Simplify right side
    290,084.14x = 77,312,719,951.48
  5. Step 5: Solve for x
    x = 77,312,719,951.48/290,084.14
  6. Step 6: Final answer
    x = 266,518.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.